To spite someone, Lin Youyou studied hard enough to score 7.5 on the IELTS, and unexpectedly became bound to the Regret-Mending System. A piece of orange candy, a blood-red door, and a corridor at 3:17 a.m. gradually led her to discover that someone had erased her memories, and that her life had once been replaced. Stranger still, deep in the corridor was another “her,” who had been waiting for seven years. To uncover the truth, she would have to pay the price of forgetting.
